03 Jun 2026
When it is time to replace a water heater, most Singapore households choose between an instant (tankless) heater and a storage (tank) heater. Both deliver hot water reliably. The right choice depends on how you live.
Instant water heaters
An instant heater warms water on demand as it flows through the unit, so it never runs out.
- Compact, ideal for HDB bathrooms with limited space
- Hot water immediately, with no waiting for a tank to heat
- Lower standby energy use
- Best suited to one outlet at a time
Storage water heaters
A storage heater keeps a tank of water hot and ready, usually mounted in the ceiling space or service area.
- Can supply multiple outlets at once, handy for larger families
- Steady temperature even during heavy use
- Needs space for the tank and time to reheat once emptied
How to choose
Think about three things:
- Space: tight bathrooms favour an instant heater
- Demand: more bathrooms and simultaneous use favour storage
- Budget: compare the unit, installation and running costs together
Whichever you pick, correct installation by a professional plumber matters for safety and longevity. If you are unsure which suits your home, we are happy to advise and supply the right unit.